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Another Jetting Question.This is a discussion on Another Jetting Question. within the 2-Stroke Motorcycles - Yamaha forum, part of the 2-Stroke Motorcycle Forums category; I just had the RHS Crank seal replaced on my 89 YZ250. I found out when i put ATF in ... |
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#1
06-22-2009, 06:29 AM
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 Another Jetting Question. I just had the RHS Crank seal replaced on my 89 YZ250. I found out when i put ATF in and it filled my yard with smoke. Anyways I just got everything back together and it runs ok, still smokes quite a bit and wont hit powerband. It falls flat on its face and blubbers and pops but up untill that point its fine. The cylinder was bored 1mm overstock and its got an fmf fatty pipe on it. The reeds are new. I havnt checked what the pilot jet was but the main is a 340. I moved the clip on the needle up one from the center but do i need to lean out the main?  |
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